Portable eye observation lamp

Abstract

The utility model relates to the technical field of slit lamps, in particular to a portable eye observation lamp which comprises a lamp pole and a button switch, a covering mechanism comprises a shading cylinder, a slit plate is fixed to the head of the shading cylinder, and a cross-shaped through groove penetrating through the slit plate is formed in the center of the slit plate; the light source mechanism comprises lamp beads; the adjusting mechanism comprises two transverse shielding strips and two longitudinal shielding strips, and the transverse shielding strips and the longitudinal shielding strips are used for shielding a groove opening of the cross-shaped through groove. The shading cylinder and the fracture plate move forwards, and the transverse shading strips and the longitudinal shading strips are kept still, so that the transverse shading strips and the longitudinal shading strips can be gradually pulled out of the cross-shaped through groove, the lengths of the unshaded parts of the four sides of the cross-shaped through groove are increased, and the lengths of the four sides of cross-shaped fracture light formed by penetrating through the cross-shaped through groove are increased.

Description

Technical Field

[0001] The utility model relates to the technical field of slit lamps, in particular to a portable eye observation lamp. Background Art

[0002] A branch of ophthalmology that uses optically reflected corneal images as a diagnostic tool to identify trachoma, cataracts, injuries, or bacterial and viral infections. These images are obtained using a slit lamp, which provides a narrow beam of light in the form of a long, narrow slit in cross-section, projected onto the cornea to study surface properties. The reflected image is actually an optical cross-section of the front of the eye, including the cornea, anterior chamber, iris or lens, and the front of the vitreous humor. Commercial slit lamp devices are commonly used in relatively expensive fixed settings in clinics and ophthalmologists' rooms, but patients usually have to be close to these devices, making it difficult to examine patients with these fixed devices when outpatient monitoring of their eye health is required.

[0003] Patent document publication number CN215383957U discloses a portable slit lamp comprising a main body, the main body comprising a main portion for capturing and displaying image information, an illumination portion for providing light for capturing, and a support portion for supporting the main body and illumination portion. The main body comprises a capturing unit for capturing image information, a display unit located opposite the capturing unit and for displaying the image information, and a handheld unit located below the display and capturing units. This patent eliminates the need for separate assembly, improving capture efficiency. Furthermore, when moving the device, the user only needs to hold the handheld unit for transport, thereby increasing the portability of the slit lamp. However, this patent still has some drawbacks: it is difficult to adjust the length of the light spot emitted by the slit lamp. Utility Model Content

[0004] The technical problem to be solved by the present invention is: in order to solve the problem that it is difficult to adjust the length of the light spot emitted by a slit lamp, the present invention provides a portable eye observation lamp to solve the above problem.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a portable eye observation lamp, comprising a lamp pole with a hollow structure, a battery compartment provided in the lamp pole, a button switch fixed on the outside of the lamp pole, and a light source mechanism, a covering mechanism and an adjustment mechanism, the covering mechanism comprising a light-shielding tube, the light-shielding tube being slidably installed in the lamp pole, a slit plate being fixed on the head of the light-shielding tube, a cross groove penetrating the slit plate being provided at the center of the slit plate; the light source mechanism comprises a lamp bead, the lamp bead is fixed to the tail of the light-shielding tube through a lamp holder and is electrically connected to the button switch; the adjustment mechanism comprises two horizontal shielding bars and two vertical shielding bars, the two horizontal shielding bars and the two vertical shielding bars are respectively inserted into the cross groove from one end of the four sides of the cross groove, the inner wall of the slot of the cross groove is slidably connected to the edge of the horizontal shielding bar and the vertical shielding bar, and the horizontal shielding bar and the vertical shielding bar are used to shield the slot of the cross groove.

[0006] Preferably, a groove for accommodating the transverse shielding strip and the longitudinal shielding strip is provided in the notch of the cross groove, and a sliding groove connecting the groove is provided on the outer wall of the light-shielding tube. The transverse shielding strip and the longitudinal shielding strip can be inserted into the notch of the cross groove along the sliding groove and slidably connected with the groove.

[0007] Preferably, the tail portions of the two transverse shielding strips are fixedly connected by a fixing ring, the fixing ring is fixed on the inner wall of the lamp pole, the tail portions of the two longitudinal shielding strips pass through the fixing ring and are fixedly connected by a sliding ring, the sliding ring is slidably installed on the inner wall of the lamp pole, and the fixing ring, sliding ring and lamp pole are coaxially arranged.

[0008] Preferably, a push block is fixed on the sliding ring, and a limiting groove is provided on the lamp pole. The push block is slidably installed in the limiting groove and can move forward and backward along the axial direction of the lamp pole. When the push block drives the sliding ring to move toward the tail of the lamp pole and reaches the limit position, the distance between the front ends of the two horizontal shielding strips is equal to the distance between the front ends of the two longitudinal shielding strips; when the sliding ring moves toward the front of the lamp pole and reaches the limit position, the distance between the front ends of the two horizontal shielding strips is smaller than the distance between the front ends of the two longitudinal shielding strips, and the distance between the front ends of the two horizontal shielding strips is equal to the groove width of the cross groove. At this time, the cross groove is blocked by the horizontal shielding strip to form a strip groove.

[0009] Preferably, a threaded sleeve is fixed to the outside of the light-shielding tube, and a threaded tube is rotatably installed on the front part of the lamp pole, and the inner wall of the threaded tube is threadedly connected to the outer wall of the threaded sleeve. Rotating the threaded tube can drive the threaded sleeve and the light-shielding tube to move. When the threaded tube rotates forward to move the light-shielding tube toward the front of the lamp pole, the length of the horizontal and longitudinal shielding strips inserted into the cross groove becomes shorter, that is, the length of the unblocked parts of the four sides of the cross groove increases; when the threaded tube rotates reversely to move the light-shielding tube toward the tail of the lamp pole, the length of the horizontal and longitudinal shielding strips inserted into the cross groove becomes longer, that is, the length of the unblocked parts of the four sides of the cross groove decreases.

[0010] Preferably, a protrusion is fixed on the outer cylinder wall of the threaded cylinder every 45°. When the threaded cylinder rotates 90° in the forward direction to drive the light-shielding cylinder to move, the length of the horizontal and longitudinal shielding strips inserted into the cross groove can be reduced by 0.5mm, that is, the length of the unblocked parts of the four sides of the cross groove is increased by 0.5mm; when the threaded cylinder rotates 90° in the reverse direction to drive the light-shielding cylinder to move, the length of the horizontal and longitudinal shielding strips inserted into the cross groove can be increased by 0.5mm, that is, the length of the unblocked parts of the four sides of the cross groove is reduced by 0.5mm.

[0011] Preferably, a light shield is fixed to the front end of the threaded barrel, the light shield is arranged around the slit plate, and the inner wall of the light shield is provided with a reflective coating.

[0012] Preferably, a guide block is fixed to the outer wall of the light-shielding tube, a guide groove is provided in the lamp pole, and the guide block is slidably installed in the guide groove.

[0013] The beneficial effect of the present invention is that a covering mechanism and an adjusting mechanism are provided, and when it is necessary to irradiate a cross-shaped slit light, the distance between the front ends of the two horizontal shading strips is made equal to the distance between the front ends of the two vertical shading strips. At this time, the four sides of the cross groove on the slit plate are blocked by the same length, and a cross-shaped slit light with the same length on four sides can be irradiated. If it is necessary to lengthen the four sides of the irradiated cross-shaped slit light, the threaded cylinder can be rotated forward to move the shading cylinder and the slit plate forward, while the horizontal shading strips and the vertical shading strips remain stationary. Therefore, when the shading cylinder and the slit plate move forward, the horizontal shading strips and the vertical shading strips will gradually be pulled out of the cross groove, thereby increasing the length of the unblocked parts of the four sides of the cross groove, thereby increasing the length of the four sides of the cross slit light formed through the cross groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely illustrative, and those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0015] Figure 1 This is a structural diagram of a preferred embodiment of a portable eye observation lamp of the present utility model;

[0016] Figure 2 This is a structural diagram of a threaded sleeve of a portable eye observation lamp of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of a lamp bead of a portable eye observation lamp of the utility model;

[0018] Figure 4 This is a structural diagram of a threaded barrel of a portable eye observation lamp of the utility model;

[0019] Figure 5 This is a structural diagram of a slit plate of a portable eye observation lamp of the utility model;

[0020] Figure 6 This is a schematic structural diagram of the horizontal shielding strips and the vertical shielding strips of a portable eye observation lamp of the present invention;

[0021] Figure 7 The utility model is a schematic structural diagram of a cross slot of a portable eye observation lamp.

[0022] Figure numerals: 1. lamp pole; 2. push button switch; 3. covering mechanism; 4. adjustment mechanism; 5. light shielding tube; 6. slit plate; 7. cross groove; 8. lamp bead; 9. horizontal shielding strip; 10. vertical shielding strip; 11. slide groove; 12. fixing ring; 13. sliding ring; 14. push block; 15. limit groove; 16. threaded sleeve; 17. threaded tube; 18. protrusion; 19. light shield; 20. guide block; 21. guide groove. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] The following first describes the concepts involved in this application with reference to the accompanying drawings. It should be noted that the following description of each concept is intended only to make the content of this application easier to understand and does not limit the scope of protection of this application. At the same time, the embodiments and features in the embodiments of this application can be combined with each other unless there is a conflict. The following detailed description of this application will be made with reference to the accompanying drawings and in conjunction with the embodiments.

[0025] like Figures 1 to 7 As shown, the utility model provides an embodiment of a portable eye observation lamp, including a lamp pole 1 with a hollow structure, a battery compartment is provided in the lamp pole 1, a button switch 2 is fixed to the outside of the lamp pole 1, and also includes a light source mechanism, a covering mechanism 3 and an adjustment mechanism 4. The covering mechanism 3 includes a light-shielding tube 5, which is slidably installed in the lamp pole 1, and a slit plate 6 is fixed to the head of the light-shielding tube 5. A cross groove 7 passing through the slit plate 6 is provided in the center of the slit plate 6. The cross groove 7 on the slit plate 6 blocks the light generated by the light source mechanism, so that a cross-shaped narrow light spot is formed when the light source is irradiated on the eye, that is, a cross-shaped slit light.

[0026] The light source mechanism includes a lamp bead 8, which is fixed at the tail of the light-shielding tube 5 through a lamp holder and is electrically connected to the button switch 2. The light source is turned on or off by the button switch 2. The lamp bead 8 is arranged at the tail of the light-shielding tube 5. The light emitted by the lamp bead 8 passes through the light-shielding tube 5 and then reaches the slit plate 6. On the one hand, the light-shielding tube 5 can block external light, and on the other hand, it can also block and reflect the light emitted by the lamp bead 8 in all directions, so that the light reaching the slit plate 6 forms parallel light. The parallel light produces less scattering after passing through the slit plate 6, thereby making the edge of the cross-shaped slit light irradiated on the eye clearer and easier to penetrate.

[0027] The adjustment mechanism 4 includes two transverse shielding bars 9 and two longitudinal shielding bars 10. The two transverse shielding bars 9 and the two longitudinal shielding bars 10 are respectively inserted into the cross groove 7 from the outer ends of the four sides of the cross groove 7. The inner wall of the groove of the cross groove 7 is slidingly connected to the edges of the transverse shielding bars 9 and the longitudinal shielding bars 10. The transverse shielding bars 9 and the longitudinal shielding bars 10 are used to shield the groove of the cross groove 7.

[0028] A groove for accommodating the transverse shielding strip 9 and the longitudinal shielding strip 10 is provided in the notch of the cross groove 7, and a sliding groove 11 connecting the groove is provided on the outer wall of the light-shielding tube 5. The transverse shielding strip 9 and the longitudinal shielding strip 10 can be inserted into the notch of the cross groove 7 along the sliding groove 11 and slidably connected with the groove.

[0029] The tail ends of the two transverse shielding strips 9 are fixedly connected by a fixing ring 12, and the fixing ring 12 is fixed on the inner wall of the lamp pole 1. The tail ends of the two longitudinal shielding strips 10 pass through the fixing ring 12 and are fixedly connected by a sliding ring 13, and the sliding ring 13 is slidably installed on the inner wall of the lamp pole 1. The fixing ring 12, the sliding ring 13 and the lamp pole 1 are coaxially arranged.

[0030] A push block 14 is fixed on the sliding ring 13, and a limiting groove 15 is provided on the lamp pole 1. The push block 14 is slidably installed in the limiting groove 15 and can move back and forth along the axial direction of the lamp pole 1. When the push block 14 drives the sliding ring 13 to move toward the tail of the lamp pole 1 and reaches the limit position, the distance between the front ends of the two horizontal shielding bars 9 is equal to the distance between the front ends of the two longitudinal shielding bars 10; when the sliding ring 13 moves toward the front of the lamp pole 1 and reaches the limit position, the distance between the front ends of the two horizontal shielding bars 9 is smaller than the distance between the front ends of the two longitudinal shielding bars 10, and the distance between the front ends of the two horizontal shielding bars 9 is equal to the width of the cross groove 7. At this time, the cross groove 7 is blocked by the horizontal shielding bar 9 to form a strip groove.

[0031] A threaded sleeve 16 is also fixed to the outside of the light-shielding tube 5, and a threaded tube 17 is rotatably installed on the front of the lamp pole 1. The inner wall of the threaded tube 17 is threadedly connected to the outer wall of the threaded sleeve 16. Rotating the threaded tube 17 can drive the threaded sleeve 16 and the light-shielding tube 5 to move. When the threaded tube 17 rotates forward to move the light-shielding tube 5 toward the front of the lamp pole 1, the length of the horizontal shielding strip 9 and the longitudinal shielding strip 10 inserted into the cross groove 7 becomes shorter, that is, the length of the unblocked parts of the four sides of the cross groove 7 increases; when the threaded tube 17 rotates reversely to move the light-shielding tube 5 toward the tail of the lamp pole 1, the length of the horizontal shielding strip 9 and the longitudinal shielding strip 10 inserted into the cross groove 7 becomes longer, that is, the length of the unblocked parts of the four sides of the cross groove 7 decreases.

[0032] A protrusion 18 is fixed on the outer wall of the threaded tube 17 every 45°. When the threaded tube 17 rotates 90° in the forward direction to drive the light-shielding tube 5 to move, the length of the horizontal shielding strip 9 and the longitudinal shielding strip 10 inserted into the cross groove 7 can be reduced by 0.5mm, that is, the length of the unblocked parts of the four sides of the cross groove 7 is increased by 0.5mm; when the threaded tube 17 rotates 90° in the reverse direction to drive the light-shielding tube 5 to move, the length of the horizontal shielding strip 9 and the longitudinal shielding strip 10 inserted into the cross groove 7 can be increased by 0.5mm, that is, the length of the unblocked parts of the four sides of the cross groove 7 is reduced by 0.5mm.

[0033] The working principle of the adjustment mechanism 4 is: when it is necessary to irradiate a cross-shaped slit light, first move the push block 14 and the sliding ring 13 back to the extreme position, so that the distance between the front ends of the two horizontal shielding strips 9 is equal to the distance between the front ends of the two longitudinal shielding strips 10. At this time, the four sides of the cross groove 7 on the slit plate 6 are blocked by the same length, and a cross-shaped slit light with the same length on all four sides can be irradiated.

[0034] When it is necessary to irradiate strip-shaped slit light, the push block 14 and the sliding ring 13 are moved forward to the extreme position, so that the distance between the front ends of the two horizontal shielding strips 9 is equal to the slot width of the cross slot 7. At this time, the two horizontal sides of the cross slot 7 are blocked by the horizontal shielding strips 9, while the two vertical sides are not completely blocked and remain connected. Therefore, when the light source passes through the blocked cross slot 7, strip-shaped slit light can be irradiated.

[0035] When adjusting the length of the four sides of the cross-shaped slit light, if it is necessary to lengthen the length of the four sides of the irradiated cross-shaped slit light, the threaded barrel 17 can be rotated 90° in the forward direction to move the light-shielding barrel 5 and the slit plate 6 forward, while the transverse light-shielding strip 9 and the longitudinal light-shielding strip 10 remain stationary. Therefore, when the light-shielding barrel 5 and the slit plate 6 move forward, the transverse light-shielding strip and the longitudinal light-shielding strip will gradually be withdrawn from the cross-slot 7 by 0.5 mm, thereby increasing the length of the unblocked portion of the four sides of the cross-slot 7 by 0.5 mm, and thereby increasing the length of the four sides of the cross-slit light formed by passing through the cross-slot 7 by 0.5 mm. Similarly, rotating the threaded barrel 17 in the opposite direction can reduce the length of the four sides of the cross-slit light. Therefore, by rotating the threaded barrel 17 multiple times, the four sides of the cross-slit light can be adjusted to a suitable length.

[0036] A light shield 19 is also fixed to the front end of the threaded barrel 17. The light shield 19 is arranged around the slit plate 6 to block external light and reduce the impact of ambient light on the cross slit light. The inner wall of the light shield 19 is provided with a reflective coating to enhance the brightness of the cross slit light.

[0037] A guide block 20 is also fixed to the outer wall of the light-shielding tube 5, and a guide groove 21 is opened in the lamp pole 1. The guide block 20 is slidably installed in the guide groove 21. When the light-shielding tube 5 moves, it is guided by the guide block 20 to maintain the stability of the light-shielding tube 5 during movement.

[0038] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of this application, they can also make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A portable eye observation lamp, comprising a lamp post (1) with a hollow structure, a battery compartment provided inside the lamp post (1), and a button switch (2) fixed to the outside of the lamp post (1), characterized in that: The light source mechanism further comprises a light source mechanism, a covering mechanism (3) and an adjusting mechanism (4), wherein the covering mechanism (3) comprises a light shielding tube (5), the light shielding tube (5) is slidably mounted in the lamp pole (1), a slit plate (6) is fixed to the head of the light shielding tube (5), and a cross groove (7) penetrating the slit plate (6) is provided at the center of the slit plate (6); the light source mechanism comprises a lamp bead (8), the lamp bead (8) is fixed to the tail of the light shielding tube (5) through a lamp holder and is electrically connected to the button switch (2). The adjustment mechanism (4) includes two transverse shielding bars (9) and two longitudinal shielding bars (10), and the two transverse shielding bars (9) and the two longitudinal shielding bars (10) are respectively inserted into the cross groove (7) from one end of the four sides of the cross groove (7) on the outside, and the inner wall of the notch of the cross groove (7) is slidably connected with the edge of the transverse shielding bar (9) and the longitudinal shielding bar (10), and the transverse shielding bar (9) and the longitudinal shielding bar (10) are used to shield the notch of the cross groove (7).

2. The portable eye observation lamp according to claim 1, characterized in that: A groove for accommodating the transverse shielding strip (9) and the longitudinal shielding strip (10) is provided in the notch of the cross slot (7), and a sliding groove (11) connected to the groove is provided on the outer wall of the light-shielding tube (5). The transverse shielding strip (9) and the longitudinal shielding strip (10) can be inserted into the notch of the cross slot (7) along the sliding groove (11) and slidably connected to the groove.

3. The portable eye observation lamp according to claim 1, characterized in that: The tail portions of the two transverse shielding strips (9) are fixedly connected via a fixing ring (12), the fixing ring (12) being fixed on the inner wall of the lamp pole (1), the tail portions of the two longitudinal shielding strips (10) pass through the fixing ring (12) and are fixedly connected via a sliding ring (13), the sliding ring (13) being slidably mounted on the inner wall of the lamp pole (1), and the fixing ring (12), the sliding ring (13) and the lamp pole (1) being coaxially arranged.

4. The portable eye observation lamp according to claim 3, characterized in that: A push block (14) is fixed on the sliding ring (13), and a limiting groove (15) is provided on the lamp pole (1). The push block (14) is slidably installed in the limiting groove (15) and can move forward and backward along the axial direction of the lamp pole (1). When the push block (14) drives the sliding ring (13) to move toward the tail of the lamp pole (1) and reaches the limit position, the distance between the front ends of the two transverse shielding strips (9) is equal to the distance between the front ends of the two longitudinal shielding strips (10); when the sliding ring (13) moves toward the front of the lamp pole (1) and reaches the limit position, the distance between the front ends of the two transverse shielding strips (9) is smaller than the distance between the front ends of the two longitudinal shielding strips (10), and the distance between the front ends of the two transverse shielding strips (9) is equal to the groove width of the cross groove (7). At this time, the cross groove (7) is blocked by the transverse shielding strip (9) to form a strip groove.

5. The portable eye observation lamp according to claim 1, characterized in that: A threaded sleeve (16) is fixed to the outside of the light-shielding tube (5), and a threaded tube (17) is rotatably mounted on the front of the lamp pole (1), the inner wall of the threaded tube (17) is threadedly connected to the outer wall of the threaded sleeve (16), and rotating the threaded tube (17) can drive the threaded sleeve (16) and the light-shielding tube (5) to move. When the threaded tube (17) rotates forward to move the light-shielding tube (5) toward the front of the lamp pole (1), the length of the transverse shielding strip (9) and the longitudinal shielding strip (10) inserted into the cross groove (7) becomes shorter, that is, the length of the unblocked portion of the four sides of the cross groove (7) increases; when the threaded tube (17) rotates backward to move the light-shielding tube (5) toward the rear of the lamp pole (1), the length of the transverse shielding strip (9) and the longitudinal shielding strip (10) inserted into the cross groove (7) becomes longer, that is, the length of the unblocked portion of the four sides of the cross groove (7) decreases.

6. The portable eye observation lamp according to claim 5, characterized in that: A protrusion (18) is fixed on the outer wall of the threaded cylinder (17) every 45 degrees. When the threaded cylinder (17) rotates 90 degrees in the forward direction to drive the light-shielding cylinder (5) to move, the length of the transverse shielding strip (9) and the longitudinal shielding strip (10) inserted into the cross groove (7) can be reduced by 0.5 mm, that is, the length of the unblocked parts of the four sides of the cross groove (7) is increased by 0.5 mm; when the threaded cylinder (17) rotates 90 degrees in the reverse direction to drive the light-shielding cylinder (5) to move, the length of the transverse shielding strip (9) and the longitudinal shielding strip (10) inserted into the cross groove (7) can be increased by 0.5 mm, that is, the length of the unblocked parts of the four sides of the cross groove (7) is reduced by 0.5 mm.

7. The portable eye observation lamp according to claim 6, characterized in that: A light shield (19) is also fixed to the front end of the threaded barrel (17), the light shield (19) is arranged around the slit plate (6), and the inner wall of the light shield (19) is provided with a reflective coating.

8. The portable eye observation lamp according to claim 1, characterized in that: A guide block (20) is also fixed to the outer wall of the light-shielding tube (5), a guide groove (21) is provided in the lamp post (1), and the guide block (20) is slidably mounted in the guide groove (21).

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